<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>练习3</title>
		<style>
			#content {
				border: solid 1px red;
				width: 600px;
				margin: auto;
			}
			tr {
				height: 35px;
				line-height: 35px;
				text-align: center;
			}
			td {
				width: 100px;
			}
			tr td:first-child{
				background-color: yellow;
			}
		</style>
	</head>
	<body>
		
		<div id="content">
			<table border="1" cellspacing="0" bordercolor="green">
				<tr bgcolor="yellow">
					<td>00</td>
					<td>01</td>
					<td>02</td>
					<td>03</td>
					<td>04</td>
					<td>05</td>
					<td>06</td>
					<td>07</td>
					<td>08</td>
					<td>09</td>
				</tr>
				<tr bgcolor="whitesmoke">
					<td>10</td>
					<td bgcolor="blue" style="color: white;">11</td>
					<td>12</td>
					<td>13</td>
					<td>14</td>
					<td>15</td>
					<td>16</td>
					<td>17</td>
					<td>18</td>
					<td>19</td>
				</tr>
				<tr bgcolor="whitesmoke">
					<td>20</td>
					<td>21</td>
					<td bgcolor="blue" style="color: white;">22</td>
					<td>23</td>
					<td>24</td>
					<td>25</td>
					<td>26</td>
					<td>27</td>
					<td>28</td>
					<td>29</td>
				</tr>
				<tr bgcolor="whitesmoke">
					<td>30</td>
					<td>31</td>
					<td>32</td>
					<td bgcolor="blue" style="color: white;">33</td>
					<td>34</td>
					<td>35</td>
					<td>36</td>
					<td>37</td>
					<td>38</td>
					<td>39</td>
				</tr>
				<tr bgcolor="whitesmoke">
					<td>40</td>
					<td>41</td>
					<td>42</td>
					<td>43</td>
					<td bgcolor="blue" style="color: white;">44</td>
					<td>45</td>
					<td>46</td>
					<td>47</td>
					<td>48</td>
					<td>49</td>
				</tr>
				<tr bgcolor="whitesmoke">
					<td>50</td>
					<td>51</td>
					<td>52</td>
					<td>53</td>
					<td>54</td>
					<td bgcolor="blue" style="color: white;">55</td>
					<td>56</td>
					<td>57</td>
					<td>58</td>
					<td>59</td>
				</tr>
				<tr bgcolor="whitesmoke">
					<td>60</td>
					<td>61</td>
					<td>62</td>
					<td>63</td>
					<td>64</td>
					<td>65</td>
					<td bgcolor="blue" style="color: white;">66</td>
					<td>67</td>
					<td>68</td>
					<td>69</td>
				</tr>
				<tr bgcolor="whitesmoke">
					<td>70</td>
					<td>71</td>
					<td>72</td>
					<td>73</td>
					<td>74</td>
					<td>75</td>
					<td>76</td>
					<td bgcolor="blue" style="color: white;">77</td>
					<td>78</td>
					<td>79</td>
				</tr>
				<tr bgcolor="whitesmoke">
					<td>80</td>
					<td>81</td>
					<td>82</td>
					<td>83</td>
					<td>84</td>
					<td>85</td>
					<td>86</td>
					<td>87</td>
					<td bgcolor="blue" style="color: white;">88</td>
					<td>89</td>
				</tr>
				<tr bgcolor="whitesmoke">
					<td>90</td>
					<td>91</td>
					<td>92</td>
					<td>93</td>
					<td>94</td>
					<td>95</td>
					<td>96</td>
					<td>97</td>
					<td>98</td>
					<td bgcolor="blue" style="color: white;">99</td>
				</tr>
			</table>
		</div>
	</body>
</html>
